CN105234331A - Punching machine for machining piston assemblies used for automobile brakes - Google Patents

Abstract

The invention relates to a stamping machine for processing piston parts for automobile brakes, which includes an upper body, a lower body, an upper mold base, a lower mold base, an upper mold, a lower mold, a fixed plate, a side pressure block, a limit sleeve, a guide column, a bearing Table and thimble rod; side pressure block is fixedly connected to the lower mold; limit sleeve is fixedly connected to the outside of the guide post; guide post is fixedly connected to both sides of the side pressure block; Load-bearing platform; the load-bearing platform is fixedly connected to the lower body; the lower mold is placed between the side pressure block and the lower mold base; the lower mold includes an outer ring mold, an inner ring mold and a connecting key. There are two grooves inside the outer ring mold. There are two notches on the edge of the ring mold, and the connecting key is triangular. The groove of the outer ring mold corresponds to the gap of the inner ring mold, and is connected by the connecting key; . The invention solves the problems of easy cracking and short service life of the lower die, improves the service life of the lower die and increases work efficiency.

Description

A punching machine for processing piston parts for automobile brakes

technical field

The invention relates to the field of mechanical forging, in particular to a stamping machine for processing piston parts for automobile brakes.

Background technique

As a kind of forging equipment, the stamping machine is often widely used in the mold casting process. It relies on the stamping machine and the mold to exert external force on the plate-shaped strip, so that the strip can be plastically deformed or separated, so as to obtain the stamping of the required shape and size. pieces. Stamping includes two kinds of deformation process and separation process. The separation process is also called blanking. Its purpose is to separate the stamped parts from the strip along a certain contour line, while ensuring the quality requirements of the separation section. The purpose of the forming process is to make the strip plastically deform without breaking the billet to make a blank of the required shape and size, but the use of the punching machine is very dangerous. The punching machine is in the process of die stamping Among them, in order to stamp the mold, the force when the punch contacts the mold is very large, so the strength of the mold is very high, but the overall mold has great limitations, and the stress will be concentrated during stamping, resulting in Mold cracking, as shown in 6', mold failure is the most likely problem in stamping production, which often causes production stoppage and affects product production cycle; on the other hand, the mold cost of stamping production is high. Usually the mold fee accounts for 1/5-1/4 of the total cost of the part. This is because the mold manufacturing is difficult and costly, and the mold repair and sharpening maintenance costs after putting into production are also high, while the original cost of the mold only accounts for about 40% of the entire mold cost. Therefore, preventing mold damage can greatly reduce the cost of molds for stamping production.

Contents of the invention

The object of the present invention is to solve the problem of early wear and tear of the mold due to the local stress of the mold, and provide an insert splicing mold, which changes the overall mold into an insert splicing mold.

The technical corresponding adjustment of the present invention is as follows:

A stamping machine for processing piston parts for automobile brakes, comprising an upper body, a lower body, an upper mold base, a lower mold base, an upper mold, a lower mold, a fixed plate, a side pressure block, a limit sleeve, a guide column, a load-bearing platform and a thimble rod; the side pressure block is fixed on the lower mold; the limit sleeve is fixed on the outer side of the guide column, which is located on the upper part of the load-bearing platform; the guide column is fixed on both sides of the side pressure block and the lower mold base; the upper mold base is fixed on the upper body; The mold base is fixed on the load-bearing platform, and has a hole for the relative movement of the thimble rod; the load-bearing platform is fixed on the lower body, and has a hole for the relative movement of the thimble rod; the lower mold is placed between the side pressure block and the lower mold base ;

The lower mold includes an outer ring mold, an inner ring mold and connecting keys, and the inner ring mold is placed in the outer ring mold and connected by connecting keys.

As an improvement, the outer ring mold is in the shape of a ring as a whole, with a first groove and a second groove inside. The first groove and the second groove are symmetrically opened. The outer diameter of the outer ring mold is D, and the inner diameter is d. The value of D/d is in the range of 1.6-2.5.

As an improvement, the value of D/d is 1.8.

As an improvement, the inner ring mold is generally circular, and the edge part has a first notch and a second notch, and the first notch and the second notch are opened symmetrically, and the outer diameter of the inner ring mold is d.

As yet another improvement, the connection key is in the shape of a triangle as a whole, the first groove inside the outer ring mold corresponds to the first notch of the inner ring mold, the second groove inside the outer ring mold corresponds to the second notch of the inner ring mold, and the two are connected through the connection key. or connect.

As another improvement, the matching mode of the outer ring mold and the inner ring mold is an interference fit.

As yet another improvement, the connecting key is divided into a first part and a second part, the first part is located in the first groove and the second groove, and the second part is located in the first notch and the second notch.

As a further improvement, the first part and the second part of the connecting key are equal in vertical height.

As a further improvement, the inner ring mold has two holes for the push rod of the thimble rod to extend into; the thimble rod has two push rods and is fixed in the middle of the lower body; the push rod part of the thimble rod is from the load-bearing platform to the lower mold, The thimble rod runs through the lower body, the load-bearing platform, the lower mold base and the lower mold, and passes through the guide holes provided by the load-bearing platform, the lower mold base and the lower mold.

As a further improvement, the lower mold is made of high-speed steel.

Beneficial effects of this embodiment: the present invention provides an insert splicing mold, which overcomes the problem of early wear and tear of the mold due to local stress of the mold, changes the overall mold into an insert splicing mold, and the overall mold stress is concentrated, which will Shorten the life of the mold and reduce the precision of the workpiece. The insert mold fully solves the local stress problem of the mold. The stress is graded and is borne by the outer ring mold and the inner ring mold respectively. After the stress is dispersed, the strength of the mold is improved and the The life of the mold is improved, and the working efficiency is improved.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments. Obviously, the accompanying drawings described below are only some embodiments of the present invention. Those of ordinary skill in the art can also obtain other drawings based on these drawings on the premise of not paying creative work.

Fig. 1-1 is a schematic diagram of Embodiment 1 of a stamping machine for processing piston parts for automobile brakes.

Figure 1-2 is a partially enlarged top view schematic diagram of the lower mold of the stamping machine for processing piston parts for automobile brakes.

Fig. 2 is a schematic diagram of the outer ring mold 6a of the lower mold in the first embodiment.

Fig. 3 is a schematic diagram of the inner ring mold 6b of the lower mold in the first embodiment.

Fig. 4 is a schematic diagram of the connecting key 6c of the lower mold in the first embodiment.

Fig. 5 is a schematic diagram of mold cracking in the description of the prior art.

Label description:

1. Upper body, 2. Lower body, 3. Upper mold base, 4. Lower mold base, 5. Upper mold, 6. Lower mold, 6a. Outer ring mold, 6a1. First groove, 6a2. Second concave Groove, 6b. Inner ring mold, 6b1. First notch, 6b2. Second notch, 6c. Connection key, 6c1. First part, 6c2. Second part, 6'. Existing lower die, 7. Fixed plate, 8 . Side pressure block, 9. Limit sleeve, 10. Guide post, 11. Bearing platform, 12. Ejector rod.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

Embodiment one

Fig. 1-1 is a schematic diagram of Embodiment 1 of a stamping machine for processing piston parts for automobile brakes; Fig. 1-2 is a schematic diagram of a partially enlarged top view of the lower die of a stamping machine for processing piston parts for automobile brakes; Fig. 2 is a schematic diagram of the lower die in Embodiment 2 3 is a schematic diagram of the inner ring mold 6b of the lower mold in Embodiment 2, and FIG. 4 is a schematic diagram of the connecting key 6c of the lower mold in Embodiment 2. As shown in Figure 1-1, Figure 1-2, Figure 2, Figure 3 and Figure 4, what is provided in this embodiment is a stamping machine for processing piston parts for automobile brakes, including an upper body 1, a lower body 2, an upper body Mold base 3, lower mold base 4, upper mold 5, lower mold 6, fixed plate 7, side pressure block 8, spacer sleeve 9, guide post 10, bearing platform 11 and thimble rod 12. The upper mold base 3 is fixed on the upper body 1; the lower mold base 4 is fixed on the load-bearing platform 11, and the lower mold base 4 has a hole for the relative movement of the thimble rod 12; The mold base 3 is fixedly connected, and the shaft is located at the root of the upper mold 5; the lower mold 6 includes an outer ring mold 6a, an inner ring mold 6b and a connecting key 6c, and the inner ring mold 6b has two ejector rods 12 for pushing The hole where the rod extends into, the lower mold 6 is placed between the side pressure block 8 and the lower mold base 4; the fixed plate 7 is fixed on the upper mold base 3, and the upper mold base 3 and the upper body are connected by a hexagon socket bolt on one side. 1 connection, one side is connected with the upper mold base 3 by hexagon socket bolts; the side pressure block 8 is fixed on the lower mold 6; the limit sleeve 9 is fixed on the outside of the guide column 10 and is located on the upper part of the load-bearing platform 11; The guide post 10 is fixed on both sides of the side pressure block 8 and the lower mold base 4; the load-bearing platform 11 is fixed on the lower body 2, and has a hole for the relative movement of the thimble rod 12; the thimble rod 12 has two Push rod, the push rod part is from the bearing table 11 to the lower mold 6, the thimble rod 12 runs through the lower body 2, the bearing platform 11, the lower mold base 4 and the lower mold 6, and passes through the bearing table 11, the lower mold base 4 and the lower mold 6 The provided holes perform relative movement and are fixed in the middle of the lower body 2 . The lower mold 6 includes an outer ring mold 6a, an inner ring mold 6b and a connection key 6c. The inner ring mold 6b is placed in the outer ring mold 6a and connected by a connection key 6c. The lower mold 6 is made of high-speed steel. The outer ring mold 6a has a circular shape as a whole, and has a first groove 6a1 and a second groove 6a2 inside. The first groove 6a1 and the second groove 6a2 are symmetrically opened. The outer diameter of the outer ring mold 6a is D, and the inner diameter is d , the value of D/d is in the range of 1.6 to 2.5, and the value of D/d in this embodiment is 1.8. The inner ring mold 6b is generally circular, and has a first notch 6b1 and a second notch 6b2 on the edge. The first notch 6b1 and the second notch 6b2 are opened symmetrically. The outer diameter of the inner ring mold 6b is d. The connection key 6c is in the shape of a triangle as a whole, with chamfered edges. The first groove 6a1 inside the outer ring mold 6a corresponds to the first notch 6b1 on the edge of the inner ring mold 6b, and the second groove 6a2 inside the outer ring mold 6a corresponds to the inner ring mold 6a. The second notch 6b2 on the edge of the mold 6b corresponds, and the two are connected by a connecting key 6c. The connecting key is divided into a first part 6c1 and a second part 6c2. The first part 6c1 is located in the groove, and the second part 6c2 is located in the notch. The vertical heights of the first part 6c1 and the second part 6c2 of the connecting key are equal.

The above is only a preferred embodiment of the invention, but the scope of protection of the present invention is not limited thereto. Any person familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present invention. , should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (10)

1. braking automobile piston element processes a stamping machine, comprises upper machine body (1), lower body (2), upper bolster (3), die shoe (4), mold (5), bed die (6), fixed head (7), side pressing block (8), stop collar (9), guide pillar (10), bearing platform (11) and thimble rod (12); Described side pressing block (8) is fixed on bed die (6); Described stop collar (9) is fixed on the outside of guide pillar (10), is positioned at the top of bearing platform (11); Described guide pillar (10) is fixed on side pressing block (8) and die shoe (4) both sides; Described upper bolster (3) is fixed on upper machine body (1); Described die shoe (4) is fixed on bearing platform (11), and has a hole for thimble rod (12) relative motion; Described bearing platform (11) is fixed on lower body (2), and has a hole for thimble rod (12) relative motion; Described bed die (6) is placed between side pressing block (8) and die shoe (4);

It is characterized in that: described bed die (6) comprises outer ring die (6a), interior ring mould (6b) and connecting key (6c), described interior ring mould (6b) is placed in outer ring die (6a), is connected by connecting key (6c).

2. a kind of braking automobile piston element as claimed in claim 1 processes stamping machine, it is characterized in that: described outer ring die (6a) entirety is in annular, inside has the first groove (6a1), the second groove (6a2), described first groove (6a1), the second groove (6a2) symmetry are offered, outer ring die (6a) external diameter is D, internal diameter is d, and the value of described D/d is in 1.6 ~ 2.5 scopes.

3. a kind of braking automobile piston element as claimed in claim 2 processes stamping machine, it is characterized in that: the value of described D/d is 1.8.

4. a kind of braking automobile piston element as described in as arbitrary in claim 2 to 3 processes stamping machine, it is characterized in that: described interior ring mould (6b) is overall rounded, edge part has the first breach (6b1), the second breach (6b2), described first breach (6b1), the second breach (6b2) symmetry are offered, and interior ring mould (6b) external diameter is d.

5. a kind of braking automobile piston element as claimed in claim 4 processes stamping machine, it is characterized in that: described connecting key (6c) is overall triangular in shape, inner first groove of outer ring die (6a) (6a1) is corresponding with interior ring mould (6b) first breach (6b1), inner second groove of outer ring die (6a) (6a2) is corresponding with interior ring mould (6b) second breach (6b2), both is connected by connecting key (6c).

6. a kind of braking automobile piston element as claimed in claim 4 processes stamping machine, it is characterized in that: described outer ring die (6a) is interference fit with the fit system of interior ring mould (6b).

7. a kind of braking automobile piston element as claimed in claim 5 processes stamping machine, it is characterized in that: described connecting key (6c) is divided into Part I (6c1), Part II (6c2), Part I (6c1) is positioned at the first groove (6a1) and the second groove (6a2), and Part II (6c2) is positioned at the first breach (6b1) and the second breach (6b2).

8. a kind of braking automobile piston element as claimed in claim 7 processes stamping machine, it is characterized in that: the Part I (6c1) of described connecting key (6c) is equal on vertical height with Part II (6c2).

9. a kind of braking automobile piston element as described in as arbitrary in claim 1 to 5 processes stamping machine, it is characterized in that: described inner ring mould (6b) has two holes stretched into for thimble rod (12) push rods; Described thimble rod (12), has two push rods, and is fixed in the middle of lower body (2); The pusher section of described thimble rod (12) is from bearing platform (11) to bed die (6), thimble rod (12) runs through lower body (2), bearing platform (11), die shoe (4) and bed die (6), by bearing platform (11), die shoe (4) and the pilot hole set by bed die (6).

10. a kind of braking automobile piston element as described in as arbitrary in claim 1 to 5 processes stamping machine, it is characterized in that: described bed die (6) is made up of high-speed steel.